کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1600527 | 1515889 | 2012 | 5 صفحه PDF | دانلود رایگان |
A Ni-8.5Al-5.4Ti (at.%) model alloy was subjected to a two-step heat treatment resulting in the formation of γ′ precipitates in a γ matrix. The microstructural evolution was followed by transmission electron microscopy. Atom probe analyses at the nanometre scale showed the inhomogeneous distribution of Ni, Al and Ti in the γ′ precipitates. Ni-rich and Ni-depleted clusters were observed. The results are discussed with respect to the excess of Ni within the γ′ phase based on the conditions of heat treatment.
Figure optionsDownload as PowerPoint slideHighlights
► Ni–Al–Ti model alloy to study decomposition of γ′ precipitates.
► Ni supersaturation of γ′ precipitates leads to phase separation phenomenon after heat treatment at 1023 K.
► Early stages of decomposition observed as clustering within γ′ precipitates.
Journal: Intermetallics - Volume 22, March 2012, Pages 226–230